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C#语法练习(10): 类[二] - 继承、覆盖、多态、隐藏2011-09-22 博客园 万一继承:

using System;

class Parent
{
public void Msg() { Console.WriteLine("Parent"); }
}

class Child : Parent { }

class Program
{
static void Main()
{
Parent ObjParent = new Parent();
Child ObjChild = new Child();

ObjParent.Msg(); //Parent
ObjChild.Msg(); //Parent

Console.ReadKey();
}
}

覆盖:

using System;

class Parent
{
public virtual void Msg() { Console.WriteLine("Parent"); }
}

class Child : Parent
{
public override void Msg() { Console.WriteLine("Child"); }
}

class Program
{
static void Main()
{
Parent ObjParent = new Parent();
Child ObjChild = new Child();

ObjParent.Msg(); //Parent
ObjChild.Msg(); //Child

Console.ReadKey();
}
}